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Analog Integrated Circuits
Analogue filter
MOS transistor
Basic analogue stages
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     Basic analogue blocks
CMOS opamp
Basic analogue blocks tutorial

Modules

1. Bias circuits
2. Gain stages
3. Source followers and output buffers
4. Differential gain stage

pages: [1] 2 3 | next

Differential gain stage

 

Differential input realized by a differential transistor pair:

 

 

Small-signal low-frequency equivalent circuit:

Based on the T model for a MOS transistor

 

 

Differential input voltage:

 

Currents:

 

Both Q1 and Q2 have the same bias currents ... gm1 = gm2

          

 

Differential output current:

 

1. Bias circuits
2. Gain stages
3. Source followers and output buffers
4. Differential gain stage

pages: [1] 2 3 | next
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